在Lenovo ThinkPad x121e上使用WLAN时遇到性能问题。使用的无线网络适配器是这样的:
lspci:
01:00.0网络控制器:Realtek Semiconductor Co.,Ltd.RTL8188CE 802.11b / g / n WiFi适配器(rev 01)
该连接通常可以正常工作一段时间,然后开始变慢并最终断开连接。有时,连接会在几秒钟后重新建立,有时会花费30秒钟或更长时间,有时甚至根本不会重新连接。
到目前为止,我尝试过的每个驱动程序都会出现此问题。特别是内核驱动
Linux ThinkPad 3.0.0-14-generic#23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 x86_64 x86_64 x86_64 GNU / Linux
和Realteks驱动程序,可以在这里找到。我目前使用的驱动程序是在此ppa中找到的驱动程序:ppa:tista/x120e
。
这是指向www.thinkwiki.org的另一个链接,暗示Realtek驱动程序中的“低功耗状态”(LPS)选项,但似乎无法在当前驱动程序中将其禁用。
有没有办法通过此设置获得更稳定的WLAN?
更多系统信息:
lshw -class网络:
description: Wireless interface
product: RTL8188CE 802.11b/g/n WiFi Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: wlan0
version: 01
serial: 38:59:f9:db:e6:83
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192CE driverversion=0006.0321.2011 firmware=56 ip=192.168.178.35 latency=0 link=yes multicast=yes wireless=802.11bgn
resources: irq:17 ioport:3000(size=256) memory:f0200000-f0203fff
iwconfig wlan0:
wlan0 802.11bgn ESSID:"xxx" Nickname:"rtl8192CE"
Mode:Managed Frequency=2.452 GHz Access Point: A2:05:43:2F:6E:8E
Bit Rate=65 Mb/s
Retry:on RTS thr:off Fragment thr:off
Power Management period:0us mode:All packets received
Link Quality=100/100 Signal level=0 dBm Noise level=-120 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
ifconfig wlan:
wlan0 Link encap:Ethernet HWaddr 38:59:f9:db:e6:83
inet addr:192.168.178.35 Bcast:192.168.178.255 Mask:255.255.255.0
inet6 addr: fe80::3a59:f9ff:fedb:e683/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:117385 errors:0 dropped:0 overruns:0 frame:0
TX packets:85652 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:115417879 (115.4 MB) TX bytes:10463799 (10.4 MB)
Interrupt:17 Memory:ffffc900037a8000-ffffc900037a8100